Cardiff closed to within three points of Sky Bet Championship pacesetters Wolves after beating relegation-battlers Burton 3-1 on Good Friday to extend their winning run to eight games.
Kenneth Zohore, Nathaniel Mendez-Laing and Callum Paterson all scored for the hosts, while Darren Bent was on target for Burton.
Zohore put Cardiff ahead after 16 minutes, rifling in following good work from Junior Hoilett out wide.
Burton, who sit 23rd in the table, hit back five minutes later through Bent but the hosts were back in front before the break as Mendez-Laing found the net in first-half stoppage time.